Just a few months ago we thought the Cold War was long over, but now it seems to threaten us anew. Ever since John le Carré brought the dark world of spy-vs.-spy into modern popular fiction, it’s been a durable plot standard that has given millions of us many hours of entertainment with a scary side order of education.

Charles Cumming’s A Divided Spy is an entertaining and thoroughly Le Carré-ish thriller set mainly in London. It’s the third featuring the ex-MI6 agent Thomas Kell, who in this book is a disaffected ex-agent, desolate because of the death of his girlfriend some months before, when he should have been euphoric because he’s successfully closed an important case.

A Divided Spyis the story of Kell’s hunt for the man, a Russian, he believes gave the order to kill the girlfriend, although he also blames his ex-chief as well.

Spy novels have evolved since Le Carré, not least because readers have evolved as well. Missing from this book is the bitter, hard-edged passion for the good side or the bad side. Instead, the characters are rounder, softer, more like educated Westerners of the Twenty-First Century. They aren’t so willing to break things. (Actually, a couple of them are, but they aren’t spies per se. More would be a spoiler.)

Cumming’s story reminded me a bit of Le Carré’s Carla books, the ones in which Smiley spends his career trying to entice the dark lord of Russian spycraft to come over to the other side. The reason he succeeds bears more than a passing resemblance to A Divided Spy, except that there’s much more of it in Cumming’s book.

And Cumming has taken the opportunity to throw in a terrorism subplot, an important one. What would any modern mystery be without ISIS?

If you read for the simple pleasure of the written word, you’ll find this one worth yourtime. Cumming’s technique is good — the plot and character elements are all in place, but you have to pay attention. Skip a sentence and you may find yourself puzzled by a character a few pages later. It will cost him a star or two from lazy reviewers, but it makes a better novel. Every word counts.